import gradio as gr
from gradio_huggingfacehub_search import HuggingfaceHubSearch
import nbformat as nbf
from huggingface_hub import HfApi


"""
TODOs:
- Show auth and push button only after notebook creation
- Improve the link to the result notebook
- Handle erros
- Add more commands to the notebook
- Parametrize the commands
- How to handle configs and splits?
- Let user choose the framework
- Improve logs
"""


def create_notebook_file(cell_commands, notebook_name="generated_notebook.ipynb"):
    nb = nbf.v4.new_notebook()
    nb["cells"] = [nbf.v4.new_code_cell(command) for command in cell_commands]

    with open(notebook_name, "w") as f:
        nbf.write(nb, f)

    print(f"Notebook '{notebook_name}' created successfully.")


def push_notebook(file_path, dataset_id, token):
    api = HfApi(token=token)
    api.upload_file(
        path_or_fileobj=file_path,
        path_in_repo="dataset_analysis.ipynb",
        repo_id=dataset_id,
        repo_type="dataset",
    )
    # TODO: Handle permission error
    print("Notebook uploaded to Huggingface Hub.")
    link = (
        f"https://huggingface.co/datasets/{dataset_id}/blob/main/dataset_analyst.ipynb"
    )
    return f'<a target="_blank" href="{link}"  style="color: var(--link-text-color); text-decoration: underline;text-decoration-style: dotted;">See notebook</a>'


def generate_notebook(dataset_id):
    # TODO: Get first config and split? or generate a dataframe per each split maybe?
    commands = [
        "!pip install pandas",
        "import pandas as pd",
        f"df = pd.read_parquet('hf://datasets/{dataset_id}/data/train-00000-of-00001.parquet')",
        "df.head()",
    ]
    notebook_name = f"{dataset_id.replace('/', '-')}.ipynb"
    create_notebook_file(commands, notebook_name=notebook_name)
    print("Notebook uploaded to Huggingface Hub.")
    return notebook_name


with gr.Blocks() as demo:
    gr.Markdown("# 🤖 Dataset auto analyst creator 🕵️")
    dataset_name = HuggingfaceHubSearch(
        label="Hub Dataset ID",
        placeholder="Search for dataset id on Huggingface",
        search_type="dataset",
        value="",
    )

    @gr.render(inputs=dataset_name)
    def embed(name):
        if not name:
            return gr.Markdown("### No dataset provided")
        html_code = f"""
        <iframe
          src="https://huggingface.co/datasets/{name}/embed/viewer/default/train"
          frameborder="0"
          width="100%"
          height="600px"
        ></iframe>
            """
        return gr.HTML(value=html_code)

    generate_btn = gr.Button("Generate notebook", visible=True)

    download_link = gr.File(label="Download notebook")
    generate_btn.click(
        generate_notebook, inputs=[dataset_name], outputs=[download_link]
    )
    with gr.Row() as auth_page:
        with gr.Column():
            auth_title = gr.Markdown(
                "Enter your token ([settings](https://huggingface.co/settings/tokens)):"
            )
            token_box = gr.Textbox(
                "", label="token", placeholder="hf_xxx", type="password"
            )
            auth_error = gr.Markdown("", visible=False)

    def auth(token):
        if not token:
            return {
                auth_error: gr.Markdown(value="", visible=False),
                push_btn: gr.Row(visible=False),
            }
        return {
            auth_error: gr.Markdown(value="", visible=False),
            push_btn: gr.Row(visible=True),
        }

    push_btn = gr.Button("Push notebook to hub", visible=False)
    token_box.change(
        auth,
        inputs=token_box,
        outputs=[auth_error, push_btn],
    )
    output_lbl = gr.HTML(value="")

    push_btn.click(
        push_notebook,
        inputs=[download_link, dataset_name, token_box],
        outputs=[output_lbl],
    )
demo.launch()